One of the reasons I got the WK7500 was its ability to feed everything from the iPad into the keyboard but you need to turn midi off to only hear the iPad tones. The iGrand app has excellent piano tones.
But I wanted to be able to use the auto accompaniment of the WK7500 with the iGrand pianos which you can't do with midi off, so using the tone editor I was able to create a tone with no sound, just turn the volume in the editor for the tone to zero. I called this No Sound set at instrument 100 of user tones. Now I can use the tones from any iPad music app and and the auto accompaniment too as we'll as split and layer.
But I wanted to be able to use the auto accompaniment of the WK7500 with the iGrand pianos which you can't do with midi off, so using the tone editor I was able to create a tone with no sound, just turn the volume in the editor for the tone to zero. I called this No Sound set at instrument 100 of user tones. Now I can use the tones from any iPad music app and and the auto accompaniment too as we'll as split and layer.